Spiraling-tool.



No. 799,974. PATENTED SEPT. 19, 1905. E. M. COBB.

SPIRALING TOOL.

APPLICATION FILED NOV. 2a, 1903.

3 SHEETS-SHEET 1.

Witness e8 I'm/ventur- PATENTED SEPT. 19, 1905.

E. M. COBB. SPIRALING T00 APPLICATION FILED NOV.

3 SHEETS-SHEET 3.

In/vento n.

WELL-1168868: M

UNITED STATES PATENT OFFICE.

ELMER M; COBB, OF SOUTH PORTLAND, MAINE, ASSIGNOR TO EDIVARD M. LANG, JR, OF PORTLAND, MAINE.

SPlRALlNG-TOOL.

Specification of Letters Patent.

Patented Sept. 19, mos.

To all 1071 0721, fr? may concern:

Be it known that I, ELMER M. COBB, a citizen of the United States, residing at South .Portland, in the county of Cumberland and State of Maine, have invented an Improvement in spiraling-Tools; and I hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

It is the purpose of my invention to provide a machine or tool whereby strips or ribbons of fiat malleable metal, or of composition of such metal, or of such metal with other substances, may be readily and economically converted into rings or incidentally, if desired, into spirals of uniform diameter.

In the drawings, Figure 1 is a side elevation of the tool. Fig. 2 is a side elevation of the stud with the spiral-former removed. Fig. 3 is a longitudinal section-of the same. Fig. 4 is a bottom plan of. the tool. Fig. 5 is a side elevation of the stud with the spiral-former in place. Fig. 6 is a longitudinal section of the same, together with the casing and fric-' tion. Fig. 7 is a top plan of the tool. Fig. 8 is a vertical longitudinal section of the tension-spring on line 8 8 of Fig. 1. Fig. 9 is a plan of the bottom of the guide, and Fig. 10 is the rear view of the lower part of the guide.

The stud a is provided through the larger part of its lower length with a uniform spiral Z2, with rectangular walls above which the di ameter of the stud is reduced, as seen in Fig. 2. Inserted into the stud are pins 0 a, which are located so as to be substantially through half of their circumference within the upper edge of the spiral I) b, the other half being in the space above thespiral; These pins are preferably placed in the same longitudinal plane and may be repeated in various longitudinal planes in the periphery of the stud. The screw or spiral-former d (see Fig. 5) is of uniform width with rectangular walls and is so constructed as to have a space between the spirals Z) and (Z sufficient to receive the ribbon to be treated. (See Fig. 5.) The lower edge of the spiral d is removed at appropriate points to form an aperture 6 to receive the plus. conforms in shape to the pin, while the other side constitutes an inclined plane. (See Fig. 5.) At convenient points the spiral d is provided with curved slots ff, the general line One side of the aperture thus created of the curve being substantially parallel with the line of the inclined plane of the aperture 0. In to these slots ff are inserted pins g g, which pass through the slots ff into the stud a. In the lower end of the stud a is pivoted the knife 11., (see Figs. 2, 3, and 6,) the cutting edge being so located as to pass closely by the projection 6, while the other end of the knife is in contact with the spring (See Figs. 3 and 6.) The lower portion of the stud, which is surrounded by the spiral Z2 6, is inclosed in a casing k. (see Figs. 1 and 6,) which is secured by appropriate means to the spiral d. The casing in turn is provided with the frictionring Z, which is so arranged that it may be set up at will by means of a screw m, and is also provided with an arm n.

The tool is held in position by means of the arm 0, which is provided with a journal adapted to receive the upper end of the stud a. This arm or bracket is provided on the under side with a tension-spring g, which is provided with a slot 1, which is substantially in the same plane as the upper ends of the spirals 6' and (Z.- The tension-spring is shown in Fig. 8 and may, as there shown, consist of a tube closed at either end embracing a coil spring a and a follower b, said tube beingprovided with a slot r near the bottom. The bracket is also provided with a guide 8, (see Figs. 1, 9, and 10,) consisting of a plate, the lower portion of which is bent rearward at right angles. The portion thus bent backward is slotted on either side and the inner sides of the right and left hand portions of the horizontal parts bent upward, as shown in Fig. 10.

In operation the arm 7L is locked and the friction-ring Z so set up that when the stud a r is moved the proper direction suflicient resistance will be afforded to cause the loose spiral d to be elevated by means of the inclined planes of the apertures e e and the curved slots f f and the pins 0 and g, respectively,

and to cause the loose spiral to be depressed when the movement of the stud is reversed and yet not prevent the oscillation of the stud after these effects have been produced. Assuming the position of the device to be that shown in Fig. 5, the ribbon of metalis carried through the slot r in the tensionspring (1 then through the guide .9, (over the central and under the side portions,) and its end being inserted between the lower surface of the upper end of the spiral Z1 and the upper surface of the spiral (Z the stud a is now rotated toward the left of the observer of Fig. 5 of the drawings, causing the spiral d to ascend. The end of the ribbon is then firmly held between the fixed and loose spiral b d and by continued motion of the stud in the same directionsay ninety degreesis car ried around the stud and given a circular form. The movement of the stud being now reversed, the combined action of the frictionring Z and of the pins 9 in the slots f depresses the loose spiral (Z, and the reverse movement of the stud is continued until the bent portion of the ribbon is passed between the fixed and loose spirals, when the movement of the stud is again reversed. The oscillation of the stud is continued until the ribbon is passed completely through the tool and converted into a spiral of the desired length. If rings or segments of rings are desired, the knife 72- is operated at appropriate uniform intervals, when it cuts the desired rings or segments.

The stud may be moved to and fro or oscillated by hand or by appropriate mechanical means.

What 1 claim is 1. The combination of a stud provided upon its periphery with a spiral rigidly attached thereto, asimilarspiral adapted to play loosely within the other, means for directing the movement of the loose spiral, a casing surrounding said spirals and connected with said loose spiral and means whereby the movement of said casing is frictionally controlled, substantially as described.

2. The combination of a stud provided upon its periphery with a spiral rigidly attached thereto, asimilar spiral adapted to play loosely within the other, means for directing the movement of the loose spiral, a casing surrounding said spirals and connected with said loose spiral, means whereby the movement of said casing is frictionally controlled and means for oscillating said stud, substantially as described.

3. The combination of a stud, a spiral fixed upon its periphery, a similar spiral adapted to play loosely within the former, means for directing the movement of the loose spiral, a casing surrounding said spirals and rigidly attached to said loose spiral, means whereby the movement of said casing is frictionally controlled, means for oscillating said stud and a guide substantially as described.

4:. A combination of a stud, having a spiral fixed upon its periphery, a similar spiral adapted to play loosely Within the former, means for directing the movement of the loose spiral, a casing surrounding said spirals and rigidly attached to said loose spiral, means whereby the movement of said casing is frictionally controlled, means for oscillating said stud and a tension-spring, substantially as described.

5. The combination of astud provided upon its periphery with a spiral rigidly attached thereto, a similar spiral adapted to play loosely within the other, means for directing the movement of the loose spiral, a casing surrounding said spirals and connected with said loose spiral, means whereby the movement of said casing is frictionally controlled and a knife placed transversely across the lower end of said stud, substantially as described.

6. The combination of a stud provided upon its periphery with a spiral rigidly attached thereto, asimilar spiral adapted to play loosely within said first-named spiral, means for directing the movement of said loose spiral, means whereby said stud may be oscillated and means whereby the oscillation of said stud may be frictionally controlled, substantially as described.

7. The combination of a stud provided upon its periphery with a spiral rigidly attached thereto, a similar spiral adapted to play loosely within said first-named spiral and a casing surrounding said spirals and connecting with said loose spiral, means whereby said stud may be oscillated and means whereby the movement of said casing may be frictionally controlled, substantially as described.

8. The combination of a stud provided upon its periphery with a spiral rigidly attached thereto, a similar spiral adapted to play loosely within said first-named spiral, means whereby said stud may be oscillated and means Whereby the oscillation of said stud may be frictionally controlled, substantially as described.

In testimony that I claim the foregoing as my invention I have hereunto set my hand this 20th day of November, A. D. 1903.

ELMER M. COBB.

In presence of GEO. E. BIRD, A. C. BERRY. 

